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α-Methyl-5-hydroxytryptophan

From Wikipedia, the free encyclopedia
Monoaminergic agent

Pharmaceutical compound
α-Methyl-5-HTP
Clinical data
Other namesalpha-Methyl-5-hydroxytryptophan;alpha-Methyl-L-5-hydroxytryptophan; α-Me-5-HTP; α-Methyl-5-HTP; αM-5-HTP;alpha-Me-5-HTP;alpha-Methyl-5-HTP
Drug classTyrosine hydroxylaseinhibitor;Serotonin receptor agonist
Identifiers
  • (2S)-2-amino-3-(5-hydroxy-1H-indol-3-yl)-2-methylpropanoic acid
CAS Number
PubChemCID
ChemSpider
CompTox Dashboard(EPA)
Chemical and physical data
FormulaC12H14N2O3
Molar mass234.255 g·mol−1
3D model (JSmol)
  • C[C@](CC1=CNC2=C1C=C(C=C2)O)(C(=O)O)N
  • InChI=1S/C12H14N2O3/c1-12(13,11(16)17)5-7-6-14-10-3-2-8(15)4-9(7)10/h2-4,6,14-15H,5,13H2,1H3,(H,16,17)/t12-/m0/s1
  • Key:QNQKTYDMWUGLPA-LBPRGKRZSA-N

α-Methyl-5-hydroxytryptophan (α-Me-5-HTP) is asynthetictryptaminederivative, an artificialamino acid, and aprodrug ofα-methylserotonin.[1][2] It is the α-methylatedderivative of5-hydroxytryptophan (5-HTP), while αMS is the α-methylatedanalogue ofserotonin.[1][2] Along withα-methyltryptophan (α-MTP), α-Me-5-HTP has been suggested for potential therapeutic use in the treatment of conditions thought by some authors to be related to serotonin deficiency, such asdepression.[2]

αMS is anon-selectiveserotonin receptor agonist, including of the serotonin5-HT2 receptors, and has been described as a "substitute neurotransmitter" of serotonin.[2][3][4][5] However, whereas αMS itself is toohydrophilic to efficiently cross theblood–brain barrier, thus beingperipherally selective, α-MTP and α-Me-5-HTP are able to cross the blood–brain barrier and, followingtransformation, deliver αMS into the brain.[2][6] Besides αMS,α-methylmelatonin can be formed in small amounts from α-Me-5-HTP.[7]

In addition to their serotonergic activity, α-Me-5-HTP and αMS have been found to act asnorepinephrine releasing agents similarly toα-methylphenylalanine and to otherα-alkylated tryptamines.[8][9][10] Moreover, α-Me-5-HTP is also atyrosine hydroxylaseinhibitor similarly toα-methyltyrosine, as well as anaromaticL-amino acid decarboxylase (AAAD)inhibitor, and has been found todeplete levels of brainnorepinephrine in animals, although not levels of braindopamine.[2][11][8][12][13] Because of these actions, α-Me-5-HTP showsantihypertensive effects andreduces locomotor activity in animals.[12]

See also

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References

[edit]
  1. ^ab"alpha-Methyl-5-hydroxytryptophan".PubChem. Retrieved8 October 2024.
  2. ^abcdefSourkes TL (1991). "Alpha-methyltryptophan as a therapeutic agent".Prog Neuropsychopharmacol Biol Psychiatry.15 (6):935–938.doi:10.1016/0278-5846(91)90020-2.PMID 1763198.
  3. ^Maroteaux L, Ayme-Dietrich E, Aubertin-Kirch G, Banas S, Quentin E, Lawson R, et al. (February 2017)."New therapeutic opportunities for 5-HT2 receptor ligands"(PDF).Pharmacol Ther.170:14–36.doi:10.1016/j.pharmthera.2016.10.008.PMID 27771435.alpha-methyl-5-HT is a non-selective nearly full agonist at 5-HT2 receptors with similar affinity to 5-HT2A 5-HT2B and 5-HT2C receptors (Jerman, et al., 2001; Knight, et al., 2004; Porter, et al., 1999).
  4. ^Vickers SP, Easton N, Malcolm CS, Allen NH, Porter RH, Bickerdike MJ, et al. (2001). "Modulation of 5-HT(2A) receptor-mediated head-twitch behaviour in the rat by 5-HT(2C) receptor agonists".Pharmacol Biochem Behav.69 (3–4):643–652.doi:10.1016/s0091-3057(01)00552-4.PMID 11509227.
  5. ^Ismaiel AM, Titeler M, Miller KJ, Smith TS, Glennon RA (February 1990). "5-HT1 and 5-HT2 binding profiles of the serotonergic agents alpha-methylserotonin and 2-methylserotonin".Journal of Medicinal Chemistry.33 (2):755–758.doi:10.1021/jm00164a046.PMID 2299641.
  6. ^Diksic M, Young SN (September 2001). "Study of the brain serotonergic system with labeled alpha-methyl-L-tryptophan".J Neurochem.78 (6):1185–1200.doi:10.1046/j.1471-4159.2001.00536.x.PMID 11579128.
  7. ^Montine TJ, Missala K, Sourkes TL (January 1992). "Alpha-methyltryptophan metabolism in rat pineal gland and brain".J Pineal Res.12 (1):43–48.doi:10.1111/j.1600-079x.1992.tb00024.x.PMID 1564632.
  8. ^abLahti RA, Platz PA, Heinzelman RV (July 1969). "Effects of alpha-methyl-5-hydroxytryptophan and alpha-methyl-5-hydroxytryptamine on norepinephrine in mouse myocardium".Biochem Pharmacol.18 (7):1601–1608.doi:10.1016/0006-2952(69)90147-6.PMID 5306701.
  9. ^Blough BE, Landavazo A, Decker AM, Partilla JS, Baumann MH, Rothman RB (October 2014)."Interaction of psychoactive tryptamines with biogenic amine transporters and serotonin receptor subtypes".Psychopharmacology (Berl).231 (21):4135–4144.doi:10.1007/s00213-014-3557-7.PMC 4194234.PMID 24800892.
  10. ^Blough BE, Landavazo A, Partilla JS, Decker AM, Page KM, Baumann MH, et al. (October 2014)."Alpha-ethyltryptamines as dual dopamine-serotonin releasers".Bioorganic & Medicinal Chemistry Letters.24 (19):4754–4758.doi:10.1016/j.bmcl.2014.07.062.PMC 4211607.PMID 25193229.
  11. ^Murphy GF, Sourkes TL (May 1961). "The action of antidecarboxylases on the conversion of 3,4-dihydroxyphenylalanine to dopamine in vivo".Arch Biochem Biophys.93 (2):338–343.doi:10.1016/0003-9861(61)90276-4.PMID 13726974.
  12. ^abTabei R, Spector S, Louis WJ, Sjoerdsma A (July 1969). "Antihypertensive and noradrenaline-depleting effects of alpha-methyl-5-hydroxytryptophan in the rat".Eur J Pharmacol.7 (1):39–44.doi:10.1016/0014-2999(69)90160-5.PMID 5307150.
  13. ^Dominic JA, Moore KE (December 1969). "Behavioral and catecholamine depleting effects of alpha-methyl-5-hydroxytryptophan".Eur J Pharmacol.8 (3):292–295.doi:10.1016/0014-2999(69)90037-5.PMID 5308817.
5-HT1
5-HT1A
5-HT1B
5-HT1D
5-HT1E
5-HT1F
5-HT2
5-HT2A
5-HT2B
5-HT2C
5-HT37
5-HT3
5-HT4
5-HT5A
5-HT6
5-HT7
Non-specific
AAADTooltip Aromatic L-amino acid decarboxylase
MAOTooltip Monoamine oxidase
Phenethylamines
(dopamine,epinephrine,
norepinephrine)
PAHTooltip Phenylalanine hydroxylase
THTooltip Tyrosine hydroxylase
DBHTooltip Dopamine beta-hydroxylase
PNMTTooltip Phenylethanolamine N-methyltransferase
COMTTooltip Catechol-O-methyl transferase
Tryptamines
(serotonin,melatonin)
TPHTooltip Tryptophan hydroxylase
AANATTooltip Serotonin N-acetyl transferase
ASMTTooltip Acetylserotonin O-methyltransferase
Histamine
HDCTooltip Histidine decarboxylase
HNMTTooltip Histamine N-methyltransferase
DAOTooltip Diamine oxidase
DRAsTooltip Dopamine releasing agents
NRAsTooltip Norepinephrine releasing agents
SRAsTooltip Serotonin releasing agents
Others
Tryptamines
4-Hydroxytryptamines
andesters/ethers
5-Hydroxy- and
5-methoxytryptamines
N-Acetyltryptamines
α-Alkyltryptamines
Cyclized tryptamines
Isotryptamines
Related compounds
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